siesta-lite/examples/browser/1.unit-tests/wait_for.t.js

Stress-free JavaScript unit testing and functional testing tool, works in NodeJS and browsers

StartTest(t => {

    t.waitForPollInterval = 10

    t.chain(
        // wait for selector to appear
        { waitFor : 'Selector', args : [ '.some-css-class' ] },

        next => {
            // Do some cool stuff, selector '.some-css-class' is now in the DOM
            next()
        },

        // wait for selector to disappear
        { waitFor : 'SelectorNotFound', args : [ '.some-css-class' ] },

        next => {
            // Do some cool stuff, selector '.some-css-class' is now not in the DOM
            next()
        }
    );

    setTimeout(() => {
        document.body.className = 'some-css-class';

        setTimeout(() => {
            document.body.className = '';
        }, 100);

    }, 100)
});